Door opening and xclosing m mechanism



S. A. TEEL.

DOOR OPENING AND CLOSING MECHANISM.

APPLICATION FILED MAR. 15, 1919.

1,815,053. Patente'dsept. 1919.

WITNESSES I 1 'Z,. QLZW; 20 5,4 TEFL j v v end with the door to be operated, and serves to swing the same about its hinges upon rotation of the member 1.4. Rotation of the motor 14 is set up in the followingmanner: The operating handle 53 is grasped and i' 15 pulled downwardly, which action closes the switch 23 in the circuit to the motor 21. If the clutch is engaged, as shown, a rotation of the armature of the motor 21 sets up a rotation of the shaft 19, and through the 20 medium of the worm gears 22 and 13, the member 14 will be rotated. This rotation of the member 14, through the medium of the crank arm 16,.serves to open or close the door, as the case may be.

It will be noted that when the handle 53 is pulled to close the switch 23, the rocking lever 37 is moved to a position opposite to that shown in Fig. 2. That is, the vertically-extending arm 39 will be moved vertimember 14. Immediately the dog passes by the projecting finger 60, the spring 49 re-.

turnsthe dog to the position shown in Fig. 2.

5 As the member 14 rotates, the projecting finger engages the inner end of the dog 45, I thus moving the rocking lever to lift thevertically-extending arm 39 to the position shown in Fig. 2, which action opens the circuit by operation of the switch 23, and the motor stops with the parts in the position shown in Fig. '2.

If it be desired to use the power-actuating mechanism hereinafter mentioned, the

.45 handle 53 is grasped and pulled downwardly, which moves the rocking lever 37, and through themedium of the shaft 36, link 43, and pivoted lever 42, the belt-shifting mechanism is actuated and the belt 35 1s moved from the loose pulley 33 to the fixed pulley 34, which action setsup a rotation of the shaft 19 and a consequent movement of the rotating member 14. As the member 14 rotates to a point where its projecting finger 5/5 engages the, inner end of the pivoted dog 45, the shaft 36 will be rocked again to op erate. the belt-shifting'mechanism and move 'the belt1f35 from the fixed pulley 34 to the I [y loose pulley 33.

i If it is desired to operate-the device by Ihand,,the operating handle 27 of the hand wheelji25; is grasped and said hand wheel is I rotated Through the: medium of the chain wheel 32, the shaft 19 and the member 14 29, the sprocket wheel 28 will be rotated and the dog 30 will fall into engagement with 66 the toothed wheel 32, which, as before stated,

is secured to the shaft 19. Upon continued movement of the hand wheel 25, after-tho dog 30 has been engaged with the toothed 70 will be rotated in the manner heretofore described.

It will be noted that when the device is operated by hand, the projecting finger (30 of the member 14 is free to pass by the pivoted dogs 45 and 48,without setting up any 0 eration of the shaft 36, thereby causing t e switch-operating mechanism of the electric motor and the belt-shifting mechanism of the power actuated deviceto remain at rest.

From the foregoing, it will be seen that the present invention provides means for operating large and heavy swinging doors, and that after the mechanism has been set into operation for the purpose of opening the doors, the bringing of the several parts of the operating mechanism to rest 18 automatically accomplished.

Having thus described the invention, what is claimed as new is:

1. A device of the character described comprising a base, a motor mounted on said base, a shaft rotatably mounted on said base and adapted to be operatively connected with said motor, a rotating member adapted to be operated by said shaft, door-operating means pivotally connected to said rotating member, a rocking beam mounted on the base, a right-angular arm carried byeach end of said rocking beam, a switch for controlling the supply of current to the motor, means connected with one of said rightangular arms and to said switch for operating the latter, and means carried by each of said right-angular arms for engagement with a pawl carried by the rotating member for operating said current controlling means upon rotation of the rotary member.

2. A device of the character described comprising a base, a motor carried by the base, a rotating member driven by said motor, means for controll ling the supply of current to said motor a .ocking lever pivotally mounted on said base, a vertical lever extending from each end of the rocking lever and embracing the rotating member, means connecting one of said vertical levers with the current-controlling means, and resilient means carried by each of said vertical levers and adapted to be engaged by a pawl rigidly carried by the rotating member to move the rocking lever about its pivot for operating the current-controlling means of the motor.

STEWARD ALLENTEEL'; 

